Improvement in fire-extinguishers



CHRISTOPHER L. DELMAGE, OF WOONSOOKET, RHODE ISLAND.

IMPROVEMENT IN FIRE-EXTINGUISHERS.

Specification forming part of Letters Patent No. 162,041, dated April 13, 1875; application led December 1:2, 1874.

To all whom it may concern:

Be it known that I, CHRISTOPHER L. DEL- MAGE, of Woonsocket, in the county of Providence and State of Rhode Island, have invented a new and valuable Improvement in Fire-Extinguishers, and I do hereby declare that the following is a full, clear, and exact description of the construction and operation ofthe same, reference being had to the annexed drawings, making a part of this specification, and to the letters and gures of reference marked thereon.

Figure l ofthe drawings is a representation of a longitudinal 'vertical section ot" my fireextinguisher; and Fig. 2 is an end view, part sectional, of the Sallie.

rlhis invention has relation to improvements in tireextinguishers wherein are employed rotating sprinkling-heads, having radial ejecting-nozzles so constructed as to throw water into and over every part of the room.

The object of the invention is to secure a positive and reliable rotation for the said head, to cause the water to be thrown out fromthe nozzles in fan-shaped sheets, and to secure a hermetical joint for the rotating head and its feed-pipe, upon which the former rotates'.

To this end the nature| of the invention consists in a transverse slit cut in the radial nozzle on opposite sides thereof, the said slits being oblique to the length of the ejecting-nozzles, and inclining outward from the head7 whereby the leverage ofthe ejecting arms or nozzles is greatly increased, and a fan-shaped sheet of water is thrown. It also consists in slots cut in the closed end of the nozzles, whereby an equal number of sheets of water is thrown during the rotation of the head into every part ot the room, the sheets being separate and distinct, and yet sufricient in volume to extinguish re wherever it falls.

In the annexed drawings, A designates a hollow head, the body ot' which may be cylindrical and the top hemisphericah'which latter is provided with a number of perforations. The lower contracted end of head A is provided with an outwardly-projecting flange, b, and it is adapted to be received within a cupshaped enlargement, B, on the upper end of a feedpipe, D. The hanged end of head A having been inserted within cup B, a suitable packing-ring, c, is laid upon iiange b, 'and the lips d of the cup are swaged inward and over the ring, as shown in Fig. I. By this means the joint of the head and its feed-pipe is rendered incapable of leaking while the free rotation of the former within the cup ot the latter is in nowise obstructed. Head A is provided with two radial arms or nozzles, C C, which are arranged diametrically opposite each other, and the outer extremities ot' these nozzles are divided by transverse and parallel partitions e into a number of exit-apertures, j', ot' tlat form, through which the water will be thrown in sheets, which will be separate and distinct from each other, and

yet of sufficient volume to put out the ilames wherever they fall.

By this construction I secure all the advantages possessed by the sprinklers, in that the streams of water are directed to different parts of the walls, and do away with their defects, which are, that the streams are concentrated, and so divided up that while the walls will be wet in spots and the lire extinguished at those points, it will rage with undiminished violence at intermediate points.

The outer ends of nozzles O, near partitions c, are provided with slits-ct, which are cut in a position oblique to the long axis of the said nozzles, and on opposite sides thereof. as shown in Fig. l. Slits a being oblique to the nozzles, and at or near their outer ends, the rotation of the head will discharge a fanshaped stream of water, and the rapidity ot' rotation will be greatly increased, for the reason that an increased leverage is thus .imparted to the arms or nozzle, and the full head or power of the water is obtained at the ends ot' the said arms, and is not frittered away along their whole length. The rapid rotation of the head thus obtained insures a frequent wetting of the burning parts of a- In a the-extinguisher, the combination, with a rotating head, A, of the radial arms or nozzles C, havng spaced transverse partitions e, forming at Water-passages f, and oblique slitsa in their ends7 substantially as specified.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two Witnesses.

CHRISTOPHER L. DELMAGE.

Witnesses:

DARIUs D. FARMAN, GEORGE A. WILBUR. 

